Recently it has been proposed that alkylsiloxane self-assembled monolayers on oxidized Si~100! decompose through C–C bond cleavage @G. J. Kluth, M. M. Sung, and R. Maboudian, Langmuir 13, 3775 ~1991!#. To verify this desorption picture, pentadecyltrichlorosilane precursors with four deuterated carbon atoms at the end of the molecule have been synthesized. High-resolution electron energy-loss sp...

A biosensor combines two functions: molecular recognition and signal transduction’. The fabrication of a biosensor often requires the properties of surfaces to be tailored and patterned with complex organic functional groups including, for example, ligands for protein recognition, and attachment points for proteins, peptides, carbohydrates and other relevant groups. Convenient, generally applic...

For phase transitions in complex low-dimensional organic materials, the internal degrees of freedom of the molecules, which are an important characteristic of organics, have to be considered, and a very rich phase behavior, as seen, for example, in Langmuir films (on liquid surfaces) can be found. Among the well-defined, crystalline two-dimensional organic thin films chemisorbed on a solid subs...

Junctions with the structure Ag/S(CH2)nT// Ga2O3/EGaIn (where S(CH2)nT is a self-assembled monolayer, SAM, of n-alkanethiolate bearing a terminal functional group T) make it possible to examine the response of rates of charge transport by tunneling to changes in the strength of the interaction between T and Ga2O3. Introducing a series of Lewis acidic/basic functional groups (T = −OH, −SH, −CO2H...

The classical molecular dynamics simulations presented here examine the periodicities associated with the sliding of a diamond counterface across a monolayer of hydrocarbon chains that are covalently bound to a diamond substrate. Periodicities observed in a number of system quantities are a result of the tight packing of the monolayer and the commensurate structure of the diamond counterface. T...

Self-assembled monolayers (SAMs) have been the preferred material systems to investigate specific properties in several disciplines for nearly 15 years. Advances in various techniques and their application to the study of SAMs have dramatically improved our understanding of these systems. Adaptation of this molecular architecture into three dimensions in the form of monolayer-protected clusters...

In order to develop a robust biosensor based on quartz crystal microbalance technique for antigen detection, a control of the steps of the surface functionalization has been performed by impedance spectroscopy. The gold electrode is functionalized with the self-assembled monolayer technique. The high insulating properties of the acidic thiol monolayer has been characterized with cyclic voltamme...

A review on the mechanisms and characterization methods of molecular electronic transport is presented. Using self-assembled monolayers (SAMs) of alkanethiols in a nanometer scale device structure, tunneling is unambiguously demonstrated as the main conduction mechanism for large bandgap SAMs, exhibiting well-known temperature and length dependencies. Inelastic electron tunneling spectroscopy e...

Gold nanoparticle self-assembled monolayers were fabricated by a sequential anchoring mechanism with rigid arenedithiol chemical linkers. These particle surface assemblies exhibited well-defined quantized capacitance characters in aqueous solutions, and more importantly, in aqueous solutions, the voltammetric responses were rectified in the presence of hydrophobic anions, which was interpreted ...

Molecular devices are reported utilizing active self-assembled monolayers containing the nitroamine @28-amino-4,48-di~ethynylphenyl!-58-nitro-1-benzenethiolate# or the nitro compound @4,48-di~ethynylphenyl!-28-nitro-1-benzenethiolate# as the active components. Both of these compounds have active redox centers. Current–voltage measurements of the devices exhibited negative differential resistanc...